Thursday, Feb 26, 2015 at 21:34
I don't have one EDIT-- I do have one, it was just extremely hard to find. needed a Torch and Mirror and had I not done a Mod and fitted a door under the sink it would have been invisible.
My thoughts, right or wrong.
The hot water units (Suburban/Trauma) in Caravans are all fitted with Thermostats to regulate the Max temperatures.
Instantaneous Units are not required to have one from what I understand.
" The Plumbing Code of Australia (PCA) has two conflicting requirements. To protect against the growth of Legionella bacteria, the cause of Legionnaires’ disease, it is a legal requirement that any stored hot water be kept at a minimum temperature of 60°C. This requirement is as per Australian Standard AS3500.4.2 Clause 1.6. This applies to all hot water systems with tanks, including solar and heat pumps.
On the other hand, the Code requires that the delivery temperature of hot water for personal hygiene purposes (primarily bathroom taps) is not to exceed 50°C. The maximum temperature is 45°C for early childhood centres, primary and secondary schools, and nursing homes or similar facilities for young, aged, sick or disabled persons. So, how are both of these requirements met?
The exceptions to this rule are tankless continuous flow hot water systems. As they have no tank in which Legionella bacteria can breed, they do not have to be set at 60°C. Typically, they are factory pre-set to 50°C. As a result, no tempering valve is required."
I would assume a Tempering Valve is not required as the thermostat does not allow the water to reach scalding temperatures.
"Scalding is one of the most serious, painful and long-term injuries for young children. Scalding can happen very quickly, depending on the temperature of the water.
For example, at 60°C a serious burn can occur in 1 second. However, at 50°C a serious burn wouldn’t typically happen until after 5 minutes, so you can see the benefit of controlling the temperature of the hot water at the tap."
I guess if you want added protection just go and buy and fit one.
Excuse the quotes but I find Google my friend.
Cheers
John
AnswerID:
588418
Follow Up By: col carpenter - Friday, Feb 27, 2015 at 03:25
Friday, Feb 27, 2015 at 03:25
John.
They are not instantaneous, they have a tank that holds hot water.
So the thermostat would have to be set over 60C.
Licensed plumber on the job here today, said needs tempering valve if it services the bathroom.
Regards Col
FollowupID:
856407
Follow Up By: Toyman - Friday, Feb 27, 2015 at 04:04
Friday, Feb 27, 2015 at 04:04
Hi,
Perhaps my phrasing was incorrect.
I realize the two brands I mentioned are NOT instantaneous, but I also know some instantaneous(continuous flow) units have been fitted to Vans so was trying to cover all fields.
Cheers
John
FollowupID:
856408
Follow Up By: braggy - Friday, Feb 27, 2015 at 18:27
Friday, Feb 27, 2015 at 18:27
Thanks for the reply John,
Seems as though you are the only one who knows what they have.
I had the temperature tested yesterday, the electric heater at the shower head is 65C, and since Suburban state gas is a rise of 45C, with those black tanks on a warm day could make it to 70C.
Hope everyone reads your quote as to how dangerous water is at these temperatures and "does what is in their best interest" and not leave it to someone else to look after them.
Cheers Ken
FollowupID:
856409
